From 04bedbc9547aeed117550a597f33ebc2efc96fb5 Mon Sep 17 00:00:00 2001
From: Mattermost Build <build@mattermost.com>
Date: Tue, 8 Oct 2019 14:15:37 +0200
Subject: [PATCH] Fix running mm-i18n that crashes on conditional operators
 (#3386)

---
 app/components/sidebars/drawer_layout.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/app/components/sidebars/drawer_layout.js b/app/components/sidebars/drawer_layout.js
index c7ef74a23..16fe14a16 100644
--- a/app/components/sidebars/drawer_layout.js
+++ b/app/components/sidebars/drawer_layout.js
@@ -122,7 +122,9 @@ export default class DrawerLayout extends Component {
     }
 
     componentWillUnmount() {
-        this.openValue?.removeListener(this.handleOpenValueChanged);
+        if (this.openValue) {
+            this.openValue.removeListener(this.handleOpenValueChanged);
+        }
         Dimensions.removeEventListener('change', this.handleDimensionsChange);
     }